SOLUTION: A 5-pound bag of flour costs $1.24. What is the cost of 75 pounds of flour?

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Question 742935: A 5-pound bag of flour costs $1.24. What is the cost of 75 pounds of flour?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

the cost of 75 pounds will be proportionally higher:
75%3A5=x%3A1.24
75%2A1.24=5x
93=5x
93%2F5=x
$18.6=x

or, you can do it this way:
so, the cost of 1 pound is $1.24%2F5=0.248=0.25
then the cost of 75 pounds will be 0.25%2A75=18.6